FatbossTV mythic strategy video here. It’s short and to the point. No major changes from the thing I wrote above, but few clarifications.
Green debuff for fire platform:
3 people with good mobility and damage reduction (rogues and DH’s work great) should go pick up the green debuff. One of the three should be healer going to the plafrom to keep up self and the other debuff carriers. Staggered pickup with about 2-3 seconds between them so that they can stagger the debuff explosions.
Go to the green platform to pick up the puddles when boss is at 95% so you’ll arrive to red platform about same time as the rest of the group. Video shows this well, but stand in triangle with tank in one corner, raid in one corner and the exploding debuff in last corner. That way explosion wont clip anybody else and it goes smooth.
Shadow debuff for green platform:
At 65% somebody with mobility and damage reduction again goes to pick up shadow debuff from the dark plane and gets it to the green miniboss. Explode it same way to remove healing reduction from the miniboss. Depending on group’s DPS one healing reduction debuff might be enough, but we should plan for two just in case. Stagger these by about 20 seconds.